1001321112 has 32 divisors (see below), whose sum is σ = 2730876480. Its totient is φ = 303430560.

The previous prime is 1001321107. The next prime is 1001321119. The reversal of 1001321112 is 2111231001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001321119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1896178 + ... + 1896705.

It is an arithmetic number, because the mean of its divisors is an integer number (85339890).

Almost surely, 2^1001321112 is an apocalyptic number.

1001321112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001321112 is an abundant number, since it is smaller than the sum of its proper divisors (1729555368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001321112 is a wasteful number, since it uses less digits than its factorization.

1001321112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792903 (or 3792899 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 1001321112 is about 31643.6583220082. The cubic root of 1001321112 is about 1000.4401768825.

Adding to 1001321112 its reverse (2111231001), we get a palindrome (3112552113).

It can be divided in two parts, 10013 and 21112, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 1001321112 in words is "one billion, one million, three hundred twenty-one thousand, one hundred twelve".